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jdoe: so, uh, how bad should disk performance on my vps be?
ls takes ~2s to list an empty directory.
dd /dev/zero to a file writes at ~1MB/s.
jpalmer: jdoe: ARP is probably one of the best disk I/O vps's I've ever used. So, if you're seeing that kind of issue, email support@ it's likely an abusive client, or a misconfiguration.
jdoe: it's a stock debian install and the machine is otherwise pretty much idle.
jpalmer: right. I understand that. but it's possible another client on your VPS is causing a problem. I'd get an email out to support@ so they can investigate.
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vcs: 21,327,698 bytes/sec
on my OpenBSD vm
jdoe: I switched from obsd because the performance was abysmal, was hoping pv drivers on linux would help.
apparently that wasn't the issue, or wasn't the only issue.
jpalmer: jdoe: did you let ARP know you were switching from BSD to linux? I know there are a couple things they can change to make linux run a little better in the VPS.
jdoe: jpalmer: well I asked them to change the media for me when I did, does that count? ;)
jpalmer: well, I'd doubt they went and looked up your old media. so, I think I'd specifically ask them to do any linux optimizations they have. not sure if downtime would be required for it though.
vcs: 21mb/s write is not bad for a VM, especially in a shared environment
jpalmer: vcs: agreed
vcs: thats odd you would only get 1/s
i would contact support
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arenlor: I'm getting 2.5MB/s on kvr05 and 53MB/s on kvr16
I'll bet the lower the kvr number, the lower your write speed.
jlgaddis: how are you guys measuring disk speeds?
i'll do it on kvr04 for comparison
arenlor: jlgaddis: dd if=/dev/zero of=~/test.txt is what I did.
Just make sure not to let it run for too long, 20 seconds gets you a gig at my better speed.
jlgaddis: didn't specify bs or count or anything?
arenlor: Nope
jlgaddis: ok
arenlor: Just let the OS run as it wanted to, would give more reliable results I'd assume.
jlgaddis: 93209088 bytes (93 MB) copied, 18.3983 s, 5.1 MB/s
my vps isn't exactly "idle", though, so that's probably not a fair comparison
arenlor: Neither is my first one
I'm going to assume that up_the_irons does some type of firewalling, or slowing.
jlgaddis: just ssh, afaik
> 10 syn's per minute to 22/tcp and the ip is blocked for 60 seconds, if memory serves
i know it's something like that... otherwise there's no filtering
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pjs: I have my own pf rules.. more than 5 connects in 30 seconds, you're blocked bitch lol
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up_the_irons: jlgaddis: you are correct
(about ssh)
no other filtering
RandalSchwartz: so happy I don't run ssh on 22 anywhere :)
far less noise in the logs
up_the_irons: yep
RandalSchwartz: On one box, I have it on 443
handy when you need to tunnel out of an agressive firewall
use the https proxy instead :)
twobithacker: I use sshguard
RandalSchwartz: don't need that if you stay away from 22
there's really no point in putting sshd on 22 these days
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